He's not given up on the manga, it's fantastic. The anime is just being milked for every penny it's still worth.

And I would take a guess and say he's already finished the Naruto manga. As for the anime, I doubt he has much say over the fillers. It'll surely be the company publisher that asks for the milk. There's no way he wants all these fillers.

Since chapter 631, I think he either gave up or his personal life is not letting him focus.
Everyone now, wants to be Hokage, everyone is OK with Sasuke coming back, He destroyed all the Naruhina development, and Sakura gained a new power and became useful out of nowhere.

It's just a build up to Naruto and Sasuke fighting for the title of Hokage. Each will have there own ideals. It's going to be history repeating itself from the Hashirama, and Madara fight. I think it's Kishi's way of setting up the final arc.

In my opinion, the anime sucks (though the music is great!). The manga is much better and doesn't have all those stupid time-wasting fillers. You get to see everything in its original state and how Kishimoto intended Naruto to be. If you read the manga, it doesn't seem like he's given up because everything still makes sense and is progressing... Even if it's REALLY slow progression. I think he's beginning to wrap things up, though. The real "enemy" is becoming clear and things are falling into place finally!

I just hope after everything's over, we get a little side-comic with an "after the war" kind of scene to see how everyone lives out their lives. After 10 or so years of Naruto, we can only hope it goes out with a bang!!

Just to draw attention away from the mindless praise of the manga and needless adversity to the anime, I would like to note a few important things. First, just because something is the original incarnation, that is not, and never will be, in any goddamn way, shape or form, an indication of superiority at all. The work itself determines the quality of said work (it is incredibly sad that I had to actually just say that), not how old it is or whether or not it came first. Second, 'original intention' does not necessarily have any bearing on the actual quality of the production either, and contriving and accepting such arbitrary (and let's face it - ridiculous) reasoning as if it somehow brings additional merit to the work is incredibly, incredibly foolish. Oh, and finally, the plot has become a deux ex machina-ridden mess (not that it was that much better before), and both mediums are guilty of being poorly written. The only real disadvantage the anime has is the abundance of filler (especially recently, but even then, the extent to which this is a detriment is debatable), but ultimately, both are incredibly flawed pieces of work, and the mediums do nothing to alleviate these issues.

But yes, it seems fairly obvious that Kishi is at least somewhat tired of Naruto by now.

Just to draw attention away from the mindless praise of the manga and needless adversity to the anime, I would like to note a few important things. First, just because something is the original incarnation, that is not, and never will be, in any goddamn way, shape or form, an indication of superiority at all. The work itself determines the quality of said work (it is incredibly sad that I had to actually just say that), not how old it is or whether or not it came first. Second, 'original intention' does not necessarily have any bearing on the actual quality of the production either, and contriving and accepting such arbitrary (and let's face it - ridiculous) reasoning as if it somehow brings additional merit to the work is incredibly, incredibly foolish. Oh, and finally, the plot has become a deux ex machina-ridden mess (not that it was that much better before), and both mediums are guilty of being poorly written. The only real disadvantage the anime has is the abundance of filler (especially recently, but even then, the extent to which this is a detriment is debatable), but ultimately, both are incredibly flawed pieces of work, and the mediums do nothing to alleviate these issues.

But yes, it seems fairly obvious that Kishi is at least somewhat tired of Naruto by now.